Posibleng Mga Sanhi para sa Di-normal na Biopsy ng Balat Actinic Keratosis Psoriasis Kanser sa Balat Basal Cell Carcinoma Squamous Cell Carcinoma sa Balat Malignant Melanoma Malignant Melanoma noong Kabataan CDK4-linked Melanoma Systemic Scleroderma Liposarcoma Amyloidosis Pemphigus Vulgaris Discoid Lupus Erythematosus Sweet Syndrome Muckle-Wells Syndrome Cutaneous T-Cell Lymphoma Behçet Disease Mycosis Fungoides Kaposi Sarcoma Systemic Mastocytosis Acral Lentiginous Melanoma Dermatofibrosarcoma Protuberans Merkel Cell Carcinoma Lupus Vulgaris Ehlers-Danlos Syndrome Chromoblastomycosis T-Cell Lymphoma